How to convert days to weeks
One day equals 0.142857 weeks. To convert, multiply the number of days by 0.142857 (or divide by 7):
Mental-math shortcut: Divide days by 7. The remainder is extra days: 100 days = 14 weeks and 2 days.
Example
Convert 100 days to weeks: 100 d × 0.142857 = 14.2857 wk.
Days to Weeks conversion chart
| Days (d) | Weeks (wk) |
|---|---|
| 1 | 0.142857 |
| 7 | 1 |
| 10 | 1.4286 |
| 14 | 2 |
| 21 | 3 |
| 28 | 4 |
| 30 | 4.2857 |
| 45 | 6.4286 |
| 60 | 8.5714 |
| 90 | 12.8571 |
| 100 | 14.2857 |
| 120 | 17.1429 |
| 180 | 25.7143 |
| 200 | 28.5714 |
| 365 | 52.1429 |
What is a day?
A day is 24 hours, or 86,400 seconds — the time Earth takes to spin once relative to the Sun. A week has 7 days, and a year has 365 days (366 in a leap year).
What is a week?
A week is 7 days, or 168 hours. A 365-day year has 52 weeks and 1 day (52 weeks and 2 days in a leap year), which is why pay calendars with 26 biweekly paychecks occasionally have 27.
Frequently asked questions
How many weeks is one day?
One day is 0.142857 weeks.
How do I convert days to weeks?
Multiply the value in days by 0.142857. For example, 100 d × 0.142857 = 14.2857 wk.
What is 30 d in weeks?
30 d is 4.2857 weeks.
How do I convert weeks to days?
Multiply weeks by 7 (or divide by 0.142857).
Conversions use the internationally agreed definitions of each unit (for example, 1 inch = 2.54 cm exactly) and are rounded for display. Volume converters use US customary units unless stated otherwise.
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